Definition: the arguer claims that a sort of chain reaction, usually ending in some dire consequence, will take place, but there's really not enough evidence for that assumption.

定义：论者断言将会出现一系列反应，特别是导致某个可怕的后果，但是却没有足够的证据支持这样的假定。

youdao

Faith, by definition, defies evidence: it is untested and unshakeable, and is therefore in direct contradiction with science.

而信仰，根据定义，是否认证据的：它未经实验证实却具有不能动摇的威力，因此它与科学是背道而驰的。

youdao

Secret sessions would be used only when relating to a very narrow definition of intelligence evidence.

BBC: Gloves to come off in secret courts battle

That is the type of gobbledygook that gives lawyers our bad name, but the committee will never read in the 455-page referral what the full evidence shows: That his definition just happened to be shared by Miss Lewinsky herself.

CNN: Transcript: Schippers, Lowell briefings before Judiciary panel, part 2

The key to the import of the new ruling is the definition of 'new evidence'.

BBC: Police bail in the dock